Cocos2d-x 3.x 头像选择器，本地相册与拍照+头像编辑功能(Android、IOS双平台实现)

Cocos2d-x 前端之家
前端之家收集整理的这篇文章主要介绍了Cocos2d-x 3.x 头像选择器，本地相册与拍照+头像编辑功能(Android、IOS双平台实现)，前端之家小编觉得挺不错的，现在分享给大家，也给大家做个参考。

大连游戏行业不是太发达，最后选择在一家应用外包公司工作，在工作和业余学习过程中积累了一点微不住道的经验，希望分享给热爱游戏的小伙伴们。

在应用开发过程中会常常有用户上传头像的功能，在网上找了N多资料发现没有人具体介绍过该用cocos2d-x实现。这篇文章就来介绍一下如何在Android和IOS平台上实现该功能。


先传一张完成后的图片一饱眼福：= = 怎么不好用呢~


直接上代码：

头文件 ImagePicker.h

/**************************************************************************
 * Copyright (c) 2015,pxbomb,All rights reserved.
 
 * File		: ImagePicker.h
 * Date		: 2015/06/02 18:02
 * Author	: 田伟汉
 * Email	: wilhan.tian@gmail.com
 * Depict	: 图像选择器
 **************************************************************************/
#ifndef _IMAGEPICKER_H_
#define _IMAGEPICKER_H_

#include "cocos2d.h"

#if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
#include "platform/android/jni/JniHelper.h"
#include <jni.h>
#endif	// CC_PLATFORM_ANDROID

/**
 * 图像选择器
 */
class ImagePicker
{
public:
    // 获取选择器单例
    static ImagePicker* getInstance();

    // 销毁
    static void destoryInstance();
public:
    // 显示本地相册与相机选择器
    void callImagePickerWithPhotoAndCamera(const std::function<void(std::string)>& callback);
    
    // 设置监听
    void setListener(const std::function<void(std::string)>& callback);
    
    // 移除监听
    void removeListener();
    
    // 打开相册
    void openPhoto();
    
    // 打开相机
    void openCamera();
    
#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
    // 设置AppController
    void setViewController(void* viewController);
#endif // CC_PLATFORM_IOS

protected:
    // 初始化
    bool init();
    
    ImagePicker();
    
protected:
    std::function<void(std::string)> m_callback;
    static ImagePicker* s_instance;
    
#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
    void* m_viewController;
#endif // CC_PLATFORM_IOS
    
};

#endif // _IMAGEPICKER_H_


实现文件 ImagePicker.cpp

#include "ImagePicker.h"
//--------------------------------------------------
#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
#import  "ImagePickerViewController.h"
#import  "RootViewController.h"
#endif
//--------------------------------------------------
#if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
#define JAVA_CLASS              "org/cocos2dx/cpp/ImagePicker"
#define JAVA_FUNC_OPEN_PHOTO    "openPhoto"
#define JAVA_FUNC_OPEN_CAMERA   "openCamera"
#endif
//--------------------------------------------------
USING_NS_CC;
//--------------------------------------------------
ImagePicker* ImagePicker::s_instance = NULL;
//--------------------------------------------------
ImagePicker* ImagePicker::getInstance()
{
    if (s_instance == NULL)
    {
        s_instance = new ImagePicker();
    }
    return s_instance;
}
//--------------------------------------------------
void ImagePicker::destoryInstance()
{
    CC_SAFE_DELETE(s_instance);
}
//--------------------------------------------------
ImagePicker::ImagePicker()
:m_callback(nullptr)
{
    Director::getInstance()->getEventDispatcher()->addCustomEventListener("ImagePickerEvent",[=](EventCustom* eve)
    {
        std::string* path = (std::string*)eve->getUserData();
        if (path && m_callback != nullptr)
        {
            m_callback(*path);
        }
    });
}
//--------------------------------------------------
void ImagePicker::callImagePickerWithPhotoAndCamera(const std::function<void(std::string)>& callback)
{
    s_instance->init();
    setListener(callback);
}
//--------------------------------------------------
void ImagePicker::setListener(const std::function<void(std::string)>& callback)
{
    m_callback = callback;
}
//--------------------------------------------------
void ImagePicker::removeListener()
{
    m_callback = nullptr;
}
//--------------------------------------------------
void ImagePicker::openPhoto()
{
#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
    ImagePickerViewController* imagePickerViewController = [[ImagePickerViewController alloc] initWithNibName:nil bundle:nil];
    
    RootViewController* _viewController = (RootViewController*)m_viewController;
    [_viewController.view addSubview:imagePickerViewController.view];
    
    [imagePickerViewController localPhoto];
#endif
    
#if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
    JniMethodInfo info;
    bool ret = JniHelper::getStaticMethodInfo(info,JAVA_CLASS,JAVA_FUNC_OPEN_PHOTO,"()V");
    if (ret)
    {
        info.env->CallStaticVoidMethod(info.classID,info.methodID);
    }
#endif
}
//--------------------------------------------------
void ImagePicker::openCamera()
{
#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
    ImagePickerViewController* imagePickerViewController = [[ImagePickerViewController alloc] initWithNibName:nil bundle:nil];
    
    RootViewController* _viewController = (RootViewController*)m_viewController;
    [_viewController.view addSubview:imagePickerViewController.view];
    
    [imagePickerViewController takePhoto];
#endif
    
#if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
    JniMethodInfo info;
    bool ret = JniHelper::getStaticMethodInfo(info,JAVA_FUNC_OPEN_CAMERA,info.methodID);
    }
#endif
}
//--------------------------------------------------
bool ImagePicker::init()
{
    cocos2d::Size visibleSize = Director::getInstance()->getVisibleSize();
    
    //-------------------------------------
    // 根层
    //-------------------------------------
    LayerColor* m_layer = LayerColor::create(Color4B(0,125));
    m_layer->retain();
    //-------------------------------------
    // 按钮背景
    //-------------------------------------
    Sprite* sprite = Sprite::create("ImagePicker/bk.png");
    sprite->setAnchorPoint(Vec2(0.5,0));
    sprite->setPosition(Vec2(visibleSize.width/2,0));
    m_layer->addChild(sprite);
    //-------------------------------------
    // 按钮
    //-------------------------------------
    Menu* menu = Menu::create();
    menu->setPosition(Vec2::ZERO);
    m_layer->addChild(menu);
    //-------------------------------------
    MenuItemImage* btnPhoto  = MenuItemImage::create("ImagePicker/ButtonPhoto.png","ImagePicker/ButtonPhoto1.png",[=](Ref* p)
    {
        openPhoto();
    });
    btnPhoto->setAnchorPoint(Vec2(0.5,1));
    btnPhoto->setPosition(Vec2(visibleSize.width / 2,280));
    menu->addChild(btnPhoto);
    //-------------------------------------
    MenuItemImage* btnCamera = MenuItemImage::create("ImagePicker/ButtonCamera.png","ImagePicker/ButtonCamera1.png",[=](Ref* p)
    {
        openCamera();
    });
    btnCamera->setAnchorPoint(Vec2(0.5,1));
    btnCamera->setPosition(btnPhoto->getPosition() + Vec2(0,-btnPhoto->getContentSize().height));
    menu->addChild(btnCamera);
    //-------------------------------------
    MenuItemImage* btnCancel = MenuItemImage::create("ImagePicker/ButtonCancel.png","ImagePicker/ButtonCancel1.png",[=](Ref* p)
    {
        float height = sprite->getContentSize().height;

        MoveBy* move = MoveBy::create(0.2,Vec2(0,-height));
        sprite->runAction(move);
        menu  ->runAction(move->clone());

        Sequence* seq = Sequence::createWithTwoActions(FadeOut::create(0.2),RemoveSelf::create());
        m_layer->runAction(seq);
    });
    btnCancel->setAnchorPoint(Vec2(0.5,1));
    btnCancel->setPosition(btnCamera->getPosition() + Vec2(0,-btnCamera->getContentSize().height - 20));
    menu->addChild(btnCancel);
    //-------------------------------------
    // 文字
    //-------------------------------------
    Label* textPhoto  = Label::createWithSystemFont("Photo","",24);
    textPhoto->setPosition(btnPhoto->getContentSize() / 2);
    textPhoto->setTextColor(Color4B::BLACK);
    btnPhoto->addChild(textPhoto);
    //-------------------------------------
    Label* textCamera = Label::createWithSystemFont("Camera",24);
    textCamera->setPosition(btnPhoto->getContentSize() / 2);
    textCamera->setTextColor(Color4B::BLACK);
    btnCamera->addChild(textCamera);
    //-------------------------------------
    Label* textCancel = Label::createWithSystemFont("Cancel",24);
    textCancel->setPosition(btnPhoto->getContentSize() / 2);
    textCancel->setTextColor(Color4B::BLACK);
    btnCancel->addChild(textCancel);
    //-------------------------------------
    // 准备显示
    //-------------------------------------
    Director::getInstance()->getRunningScene()->scheduleOnce([=](float time)
    {
        Director::getInstance()->getRunningScene()->addChild(m_layer,INT_MAX);
        m_layer->release();

        float height = sprite->getContentSize().height;

        sprite->setPositionY(sprite->getPositionY() - height);
        menu  ->setPositionY(menu->getPositionY()   - height);

        MoveBy* move = MoveBy::create(0.3,height));
        sprite->runAction(move);
        menu  ->runAction(move->clone());

        m_layer->setOpacity(0);
        m_layer->runAction(FadeTo::create(0.2,125));

    },0.1,"ImagePickerScheduleOnce");
    //-------------------------------------
    // 截断事件
    //-------------------------------------
    EventListenerTouchOneByOne* touchEvent = EventListenerTouchOneByOne::create();
    touchEvent->setSwallowTouches(true);
    touchEvent->onTouchBegan = [=](Touch* touch,Event* eve)
    {
        if(sprite->getBoundingBox().containsPoint(touch->getLocation()))
            return true;
        
        float height = sprite->getContentSize().height;
        
        MoveBy* move = MoveBy::create(0.2,-height));
        sprite->runAction(move);
        menu  ->runAction(move->clone());
        
        Sequence* seq = Sequence::createWithTwoActions(FadeOut::create(0.2),RemoveSelf::create());
        m_layer->runAction(seq);
        
        return true;
    };
    Director::getInstance()->getEventDispatcher()->addEventListenerWithSceneGraPHPriority(touchEvent,sprite);
    //-------------------------------------
    return true;
}
//--------------------------------------------------
#if (CC_TARGET_PLATFORM == CC_PLATFORM_IOS)
void  ImagePicker::setViewController(void* viewController)
{
    m_viewController = viewController;
}
#endif
//--------------------------------------------------
#if (CC_TARGET_PLATFORM == CC_PLATFORM_ANDROID)
extern "C"
{
    void Java_org_cocos2dx_cpp_ImagePicker_onImageSaved(JNIEnv* env,jobject thiz,jstring path)
    {
        std::string strPath = JniHelper::jstring2string(path);
        Director::getInstance()->getEventDispatcher()->dispatchCustomEvent("ImagePickerEvent",&strPath);
    }
}
#endif
//--------------------------------------------------

为工程添加资源：略

(图片资源和代码下载地址：点击打开链接)


分平台实现：

------------------------------------------

Android

------------------------------------------

1. 打开Eclipse在org.cocos2x.cpp(加入你没改过的话)包名下新建“ImagePicker.java”文件

ImagePicker.java具体代码如下：

public class ImagePicker{
	
<span style="white-space:pre">	</span>public static final int 	NONE = 0;
    public static final int 	PHOTOHRAPH = 1;		// 拍照
    public static final int 	PHOTOZOOM = 2; 		// 缩放
    public static final int 	PHOTORESOULT = 3;	// 结果
    public static final String  IMAGE_UNSPECIFIED = "image/*";
    
    private static ImagePicker instance = null;
    private static Activity    activity = null;
    
    public static native void onImageSaved(String path);
    
    public static ImagePicker getInstance(){
    	if(instance == null){
    		instance = new ImagePicker();
    	}
    	return instance;
    }
    
    // 初始化
    public void init(Activity activity){
    	ImagePicker.activity = activity;
    }
    
    // 打开相册
	static public void openPhoto(){
		Intent intent = new Intent(Intent.ACTION_PICK,null);
        intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,IMAGE_UNSPECIFIED);
        activity.startActivityForResult(intent,PHOTOZOOM);
	}
	 
	// 打开相机
	static public void openCamera(){
    	Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        intent.putExtra(MediaStore.EXTRA_OUTPUT,Uri.fromFile(new File(activity.getFilesDir(),"@cc_cameraCache.jpg")));
        activity.startActivityForResult(intent,PHOTOHRAPH);
    }
	
	// 回调
	public void onActivityResult(int requestCode,int resultCode,Intent data){
		if (resultCode == NONE)
            return;
        
        // 拍照
        if (requestCode == PHOTOHRAPH) {
            File picture = new File(activity.getFilesDir() + "/@cc_cameraCache.jpg");
            startPhotoZoom(Uri.fromFile(picture));
        }
 
        if (data == null)
            return;
 
        // 读取相册缩放图片
        if (requestCode == PHOTOZOOM) {
            startPhotoZoom(data.getData());
        }
        
        // 处理结果
        if (requestCode == PHOTORESOULT) {
            Bundle extras = data.getExtras();
            if (extras != null) {
                Bitmap photo = extras.getParcelable("data");
                ByteArrayOutputStream stream = new ByteArrayOutputStream();
                photo.compress(Bitmap.CompressFormat.JPEG,75,stream);
                
                // XXX/@ci_8888-8888-8888-8888.jpg
                String path = activity.getFilesDir() + "/@ci_" + UUID.randomUUID().toString() + ".jpg";
                saveMyBitmap(path,photo);
                
                // 通知C++层已保存图片 并返回路径
                onImageSaved(path);
            }
        }
	}
	
	public void startPhotoZoom(Uri uri) {
        Intent intent = new Intent("com.android.camera.action.CROP");
        intent.setDataAndType(uri,IMAGE_UNSPECIFIED);
        intent.putExtra("crop","true");
        intent.putExtra("aspectX",1);
        intent.putExtra("aspectY",1);
        intent.putExtra("outputX",100);
        intent.putExtra("outputY",100);
        intent.putExtra("return-data",true);
        activity.startActivityForResult(intent,PHOTORESOULT);
    }
	
	public void saveMyBitmap(String filePath,Bitmap mBitmap){
    	File f = new File(filePath);
    	try {
    		f.createNewFile();
    	} catch (IOException e) {
    	}
    	FileOutputStream fOut = null;
    	try {
    		fOut = new FileOutputStream(f);
    	} catch (FileNotFoundException e) {
    		e.printStackTrace();
    	}
    	mBitmap.compress(Bitmap.CompressFormat.JPEG,70,fOut);
    	try {
    		fOut.flush();
    	} catch (IOException e) {
    		e.printStackTrace();
    	}
    	try {
    		fOut.close();
    	} catch (IOException e) {
    		e.printStackTrace();
    	}
    }
}

2. 在Android入口进行初始化

打开AppActivity.java文件，复写OnCreate()与onActivityResult()方法。

在OnCreate方法中对我们的类初始化：“ImagePicker.getInstance().init(this);”

在onActivityResult()中将回调参数传递到ImagePicker中：“ImagePicker.getInstance().onActivityResult(requestCode,resultCode,data);”

AppActivity.java具体代码：

public class AppActivity extends Cocos2dxActivity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		
		ImagePicker.getInstance().init(this);
	}

	@Override
	protected void onActivityResult(int requestCode,Intent data) {
		// TODO Auto-generated method stub
		super.onActivityResult(requestCode,data);
		
		ImagePicker.getInstance().onActivityResult(requestCode,data);
	}
}

3. 最后在AndroidManifest.xml加入访问相机权限"<uses-permission android:name="android.permission.CAMERA"/>"


------------------------------------------

IOS

------------------------------------------

1. 将开始创建的ImagePicker.cpp文件后缀名改为.mm文件。

2.在proj.ioc_mac/ios文件夹下创建两个文件，分别为ImagePickerViewController.h、ImagePickerViewController.mm

ImagePickerViewController.h具体代码：

#import <UIKit/UIKit.h>

@interface ImagePickerViewController : UIViewController<UINavigationControllerDelegate,UIImagePickerControllerDelegate>
{
    NSString* filePath;
}

// 打开本地相册
- (void)localPhoto;

// 打开相机
- (void)takePhoto;


@end

ImagePickerViewController.mm具体代码： 
#import "ImagePickerViewController.h"
#import "cocos2d.h"

@interface ImagePickerViewController ()

@end

@implementation ImagePickerViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    //[self localPhoto];
}

- (void)viewDidUnload
{
    [super viewDidUnload];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

-(void)localPhoto{
    UIImagePickerController *picker = [[UIImagePickerController alloc] init];
    picker.delegate      = self;
    picker.sourceType    = UIImagePickerControllerSourceTypePhotoLibrary;
    picker.allowsEditing = YES;
    //[self presentModalViewController:picker animated:YES];
    [self presentViewController:picker animated:YES completion:^(void){
        NSLog(@"Imageviewcontroller is presented");
    }];
    [picker release];
    
    NSLog(@"-(void)localPhoto();");
}

- (void)takePhoto{
    UIImagePickerControllerSourceType sourceType = UIImagePickerControllerSourceTypeCamera;
    if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
        UIImagePickerController* picker = [[UIImagePickerController alloc] init];
        picker.delegate = self;
        //设置拍照后的图像可编辑
        picker.allowsEditing = YES;
        picker.sourceType = sourceType;
        [picker release];
        [self presentModalViewController:picker animated:YES];
    }
    else{
        NSLog(@"模拟器中无法打开照相机，请在真机中调试");
    }
}

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{
    NSString *type = [info objectForKey:UIImagePickerControllerMediaType];
    
    //当选择的类型是图片
    if ([type isEqualToString:@"public.image"])
    {
        //先把图片转成NSData
//        UIImage* image = [info objectForKey:@"UIImagePickerControllerOriginalImage"];
        UIImage* image = [info objectForKey:@"UIImagePickerControllerEditedImage"];
        NSData *data;
        if (UIImagePNGRepresentation(image) == nil)
        {
            data = UIImageJPEGRepresentation(image,1.0);
        }
        else
        {
            data = UIImagePNGRepresentation(image);
        }
        
        //图片保存的路径
        //这里将图片放在沙盒的documents文件夹中
        NSString * DocumentsPath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
        
        //文件管理器
        NSFileManager *fileManager = [NSFileManager defaultManager];
        
        //生成唯一字符串
        NSString* uuid = [[NSUUID UUID] UUIDString];
        
        //文件名
        NSString* fileName = [NSString stringWithFormat:@"/%@.png",uuid];
        
        //把刚刚图片转换的data对象拷贝至沙盒中 并保存为XXXXXXXX-XXXX-XXXX....XXXX.png
        [fileManager createDirectoryAtPath:DocumentsPath withIntermediateDirectories:YES attributes:nil error:nil];
        [fileManager createFileAtPath:[DocumentsPath stringByAppendingString:fileName] contents:data attributes:nil];
        
        
        //得到选择后沙盒中图片的完整路径
        filePath = [[NSString alloc]initWithFormat:@"%@%@",DocumentsPath,fileName];
        
        //关闭相册界面
        [picker dismissModalViewControllerAnimated:YES];
        
        std::string strFilePath = [filePath UTF8String];
        cocos2d::Director::getInstance()->getEventDispatcher()->dispatchCustomEvent("ImagePickerEvent",&strFilePath);
    }
    
}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker{
    NSLog(@"您取消了选择图片");
    [picker dismissModalViewControllerAnimated:YES];
}

@end

3. 修改原工程AppController.mm文件，加入一行“ImagePicker::getInstance()->setViewController(_viewController);”用来初始化。

AppController.mm具体代码：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    

    cocos2d::Application *app = cocos2d::Application::getInstance();
    app->initGLContextAttrs();
    cocos2d::GLViewImpl::convertAttrs();

    // Override point for customization after application launch.

    // Add the view controller's view to the window and display.
    window = [[UIWindow alloc] initWithFrame: [[UIScreen mainScreen] bounds]];

    // Init the CCEAGLView
    CCEAGLView *eaglView = [CCEAGLView viewWithFrame: [window bounds]
                                         pixelFormat: (NSString*)cocos2d::GLViewImpl::_pixelFormat
                                         depthFormat: cocos2d::GLViewImpl::_depthFormat
                                  preserveBackbuffer: NO
                                          sharegroup: nil
                                       multiSampling: NO
                                     numberOfSamples: 0 ];

    // Use RootViewController manage CCEAGLView 
    _viewController = [[RootViewController alloc] initWithNibName:nil bundle:nil];
    _viewController.wantsFullScreenLayout = YES;
    _viewController.view = eaglView;
    
    //----------------------------------
    // 初始化ImagePicker
    //----------------------------------
    ImagePicker::getInstance()->setViewController(_viewController);
    //----------------------------------
    
    // Set RootViewController to window
    if ( [[UIDevice currentDevice].systemVersion floatValue] < 6.0)
    {
        // warning: addSubView doesn't work on iOS6
        [window addSubview: _viewController.view];
    }
    else
    {
        // use this method on ios6
        [window setRootViewController:_viewController];
    }

    [window makeKeyAndVisible];
    

    [[UIApplication sharedApplication] setStatusBarHidden:true];

    // IMPORTANT: Setting the GLView should be done after creating the RootViewController
    cocos2d::GLView *glview = cocos2d::GLViewImpl::createWithEAGLView(eaglView);
    cocos2d::Director::getInstance()->setOpenGLView(glview);

    app->run();
    
    return YES;
}



OK，接下来就是在C++代码中调用了，你只需要在想使用头像选择器的时候，调用这一行代码： 
ImagePicker::getInstance()->callImagePickerWithPhotoAndCamera([=](std::string path)
    {
        //做你想做的事情
    });
忘了说明，参数path就是你已经选择并编辑后，图片的真实路径。



咳咳，请各位大神轻喷，喜欢游戏的程序孩纸伤不起~不说了，回家LOL去了~

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